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Revision as of 19:53, 22 September 2020

Summary of Chesapeake Bay Program street sweeping crediting.
Link to this table

Pollutant Reductions Associated with Different Street Cleaning Practices (SCP)
Practice # Description Approx passes per year* TSS Removal (%)** TN Removal (%)** TP Removal (%)**
SCP-1 AST- 2 PW 100 21 4 10
SCP-2 AST- 1 PW 50 16 3 8
SCP-3 AST- 1 P2W 25</td 11 2 5
SCP-4 AST- 1 P4W 10 6 1 3
SCP-5 AST- 1 P8W 6 4 0.7 2
SCP-6 AST- 1 P12W 4 2 0 1
SCP-7 AST- S1 or S2 15 7 1 4
SCP-8 AST- S3 or S4 20 10 2 5
SCP-9 MBT- 2PW 100 0.7 0 0
SCP-10 MBT- 1 PW 50 0.5 0 0
SCP-11 MBT- 1 P4W 10 0.1 0 0

*Depending on the length of the winter shutdown, the number of passes/yr may be 10 to 15% lower than shown.

    •  % removal represents the proportion of the impervious surface unit area load removed

Table abbreviations: AST: Advanced Sweeping Technology ; MBT: Mechanical Broom Technology ; 2PW: 2 passes per week; 1PW: 1 pass every week; 1P2W: 1 pass every 2 weeks; 1P4W: 1 pass every 4 weeks; 1P8W: 1 pass every 8 weeks; 1P12W: 1 pass every 12 weeks


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